Fumigating apparatus



Sept. 25,1923. 1,468,842

, F. A. THOMPSON FUMIGATING APPARATUS Filed Feb. 11. 1922 wumtcvt Fig.5

Patented Sept. 25, 1923.

FRANK a THOMPSON, 0F DETROIQfMICHIGAN/ FUMIGA'IING APPARATUS.

Application tiled February 11', 19a, Serial No. 535,711.

To all whom it may concern:

Be it known that I, FRANK A. THOMPSON, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of 'Michigan, have invented certain. new and useful Improvements in Fumigating Apparatus, of which the following is a specifieat-iomreference being had therein to the accompanying drawings.

This invention relates to improvements in fumigating apparatus and; has for its object to provide means .for fumigating buildings infested with insects ordisease producing germs, or destroying insects which prey upon plant-life, which means are such as to providea portable fumigating apparatus having the greatest measure of safety from fire being communicated therefrom to inflammable material which may be present in the immediate vicinity of the room or articles to be fumigated.

A further object of my invention is to provide means for distributing the insect and germ destroying fumes to points difiicult, if not impossible. to reach by known methods of releasing such fumes in the atmosphere.

I accomplish the obiects thus set forth, by use of the mechanism shown in the accompanying drawings, of which-'- Figure 1 is a plan view of my apparatus, showing means of connecting the same to a sourcev of electric energy;

Fig. 2 is a side elevation thereof, with parts cut away to show in cross-section the interior structure of my apparatus by which I generate the fumes and distribute the same to the atmosphere or points desired.

Referring now to the drawings, 1 are standards or legs which support an electric heating element 2, which may be of any suitable structure such as are in commercial use for heating smooth surfaces. This heating element is provided with a handle 3. for carrying the apparatus from place to place,

and electrodes 4. to receive sockets 5, to.

which are connected wires 6. leading to any suitable source of electric energy; also connected to the same source of electric energy through sockets 5, are Wires 7 suitably mounted in one member of a connector 8. to the other member 9, of which is mounted wires 10 leading through a handle 11 to an electric motor 12, which motor may of any commercial type suitable for driving a small fan hereinafter described.- On the ,jumreo 'fPA'reNr oFFice.

heating element 2 thereis mounted injany suitable manner a band 13, preferably of sheet metal, pressed inwardly to form a shoulder 14, upon which the lower part of a lid or cover 15 rests in frictional engagement with the side wall ofa portion of the band. This band is again pressed inwardly at 16 aud then upwardly at 17, to carry the top of the band 13 away from the lid or cover 15. ,The lid or cover 15 is provided with a series of air ports 18, in such position .thatwheii the cover is pressed down against the shoulder 14; such air ports will be below the top of the band 13, so that'when air is drawn through such ports it will strike against the. top of the band 13, and be deflected upwardly. On the inside of the lid or cover 15 is mounted an air baffling plate 19. which is secured to the lid by bolts 20 or in any other suitable manner. This air baiiiing plate is of less diameter than the lid or cover 15, thus leaving a space between the side walls of the cover and the baiile plate, through which air currents may pass.- The plate 19 is spaced apart from the cover by lugs 21, leaving an air passage between the plate and the cover. In the top of the cover is an air port 22. leading into a chamber 23 formed by securing a cap 24 to the cover 15, by means of a screw 25, or other suitable connecting means. Mounted on the cap 24 in anv suitable manner, is the electric motor 12. The electric motor 12. as has been hereinbefore stated. is of any suitable type adapted to drive a fan or any other mechanism of a similar character requiring motive power, to the motor shaft of which is connected a fan blade 26. which is a straight plate of sheet metal having the lower edge thereof rounded. This fan blade is mounted in the top of the chamber 23 of the cap 24. Communicating with the chamber 23. of the cap 24. is an air pipe 27. through which the air and fumes are driven by the operation of the fan. or through which it passes. but at less velocity when the fan. is not in operation.

The operation of this device will be readi. lv understood. The user will first remo e the lid b use of the handle 11. and sprinkle on top of. the heating element 2 a quantity of chemicals having the property of being vaporized by heat, and also of destroying insects or disease producing germs. The lid or cover is then replaced and the electric current is turned on, which heats the substance to be vaporized, which sets in motion the motor which operates the fan creating a slight vacuum above the heating element and substance to be vaporized, thus causing an inrush of air through the air ports 18, against the top of the band 13, which is thereby deflected upwardly and around the edges of the air balllin; plate 19,

and through the air port carrying with it the fumes arising from the top of the heating element and within the enclosure of the band 13. and the operation continues, the fan drives the fumes and air out the air pipe 27, thus conveying the fumes to whatever point the same may he directed. It will be apparent. that in using this apparatus on plants. the fumes may. be drii'en under or over the plants and thus ererv part of the plants come in contact with the fumes. If it is desired to stop the fan. but permit the fumes to continue to be generated, the connector parts 8 and 9 may be pulled apart and thereby destroy the flow of the electric energy to the motor.

Having thus described my invention and its operation, what I claim is:

1. In a fumigating apparatus, a heating element and means for heating the same. a band secured thereon forming a receptacle, a cover for the band spaced apart from the top of the band, air ports in the cover for admission of air to the receptacle, an air port for the passage of air from the receptacle through the cover, a cap on the cover, and means within the cap for drawing the air from the receptacle.

2. In a tumigating apparatus. a heating element and means for heating the same, a hand secured thereon forming a receptacle a cover or the band spaced apart from the top of the band. air ports in the cover for the admission of air to the receptacle. means for battling the air as it enters the receptacle. means for withdrawine. the air from the receptacle. and means for battling' the air in its passage from the receptacle.

In testimony whereof I afiix my signature in presence of two witnesses.

FRANK A. THOMPSON.

Vitnesses H. C. UNnrmvoon, K. H. BUTLER. 

